City of Tigard
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Capital Improvement Projects
What We Build Matters
Together as a community we’ve invested in essential facilities, services and structures that support your daily life. That’s why the work of building things like roads, parks and water reservoirs for the community gets labeled “public works” – these projects benefit the public, all of us.
Capital Improvement Plan
The Capital Improvement Plan (CIP) is Tigard's 6-year plan for matching the cost of large-scale improvements—like fixing roads, water and sewer systems—to anticipated revenues, like taxes and bonds. Learn more about our projects below.
Pipeline Renewal and Replacement Program
- Address:Citywide
Tigard, OR 97223
Categories:- CIP Projects
- Funded
- Water
- Address:Citywide
Project Description
The Pipeline Renewal and Replacement Program was established to proactively replace up to three miles of aging water pipe annually within the Tigard Water Service Area (TWSA). The TWSA serves approximately 21,000 customers in Tigard, King City, Durham, and unincorporated Washington County. Tigard has completed a comprehensive desktop evaluation of the water distribution mains within the TWSA and identified the areas at highest risk for water main breaks. Based on this information and ongoing leak detection efforts, this project will focus on replacing the highest risk water mains within the TWSA. At times, funds may be transferred from this program to individual capital projects to leverage opportunities to replace waterlines within other projects such as major street improvements.
TIMELINE: Ongoing
FUNDING SOURCE: Water Fund
CURRENT PROJECT: The current PRRP project will be replacing approximately 1 mile of water mains in the vicinity of SW Park St and SW 107th Ave. The design process is expected to be completed in spring of 2024, with construction planned to begin in summer 2024.
OPERATION AND MAINTENANCE COSTS: The Program will result in a net decrease in operations costs as older, leak-prone waterlines are replaced.
WHY IT’S NEEDED: The city’s water distribution system is comprised of about 280 miles of water mains, of which about 25 percent is cast iron that can be at high risk of leaks and breaks. The oldest water mains in the TWSA are over 70 years old, and cast iron water mains are generally understood to have a 100-year lifespan. Failure to proactively replace aging pipe can have catastrophic financial implications. The 2020 Water System Plan recommended that the city address all distribution system pipes within a 100-year timeframe. The PRRP began in 2022, with the first two years of the program being used for evaluation, planning, and design. The 2024 construction project will replace one mile of pipe, followed by two years of replacing one to two miles of pipe per year. By 2027, it is anticipated that the city will have built up the resources and efficiencies needed to replace three miles of pipe per year.
STRATEGIC PLAN TIE-IN: This project supports the fourth goal to “fund the vision while maintaining core services” as it will allow for the continued supply of the basic, daily need of clean drinking water to community members.
CONTACT: Ross Horton: 503-718-2580 | ross.horton@tigard-or.gov